How to use credit slip as a voucher on purchase

[chirag_0110]

Hi,

 

I am a newbie in PrestaShop development. I want to know how credit slip work. I also read official documentation. Here is finding about the difference between credit slip and the voucher while return product from back office.

 

- A credit slip is first and foremost a written proof that a product has been returned. Most of the time, the customer can use it as a voucher.

- A voucher is a discount code which does not have to be tied to a merchandise return or a refund, and which can take more forms than a simple credit slip:

• A discount on an order (percentage).
• A discount on an order (amount).
• Free shipping.

As per first point about credit slip: the customer can use it as a voucher. How can customer use credit slip as voucher. I try to create credit slip from back office by returning one product. In customer account I got one credit slip. But how can customer use it in next purchase?

 

Can anybody help me?

 

Thanks in advance.